Download - Medefor 1 Example
CHAPTER
1
MECHANICS OF DEFORMABLE BODIESSIMPLE STRESS (EXAMPLE PROBLEMS)
MECHANICS OF DEFORMABLE BODIESNormal Stress
Problem 1 The column is subjected to an axial force of 8 kN which is applied through the centroid of the crosssectional area. Determine the average normal stress acting at section a-a.
MECHANICS OF DEFORMABLE BODIESNormal Stress
MECHANICS OF DEFORMABLE BODIESNormal Stress
Problem 2 The 250-N lamp is supported by three steel rods connected by ring at A. Determine which rod is subjected to the greater average normal stress and compute its value. Take U=300. The diameter of each rod is given in the figure
MECHANICS OF DEFORMABLE BODIESNormal Stress
MECHANICS OF DEFORMABLE BODIESNormal Stress
Problem 3 The thrust bearing is subjected to the loads shown. Determine the average normal stress developed on cross-sections through points B, C, and D.
MECHANICS OF DEFORMABLE BODIESNormal Stress
MECHANICS OF DEFORMABLE BODIESNormal Stress
Problem 4 The concrete hollow block has dimension shown. If the material fails when the average normal stress reaches 0.840 Mpa, determine the largest centrally applied vertical load P it can support.
MECHANICS OF DEFORMABLE BODIESNormal Stress
MECHANICS OF DEFORMABLE BODIESNormal Stress
Homework The bars of the truss each have a crosssectional area of 780 mm2. If the maximum normal stress in any bar is not to exceed 140 Mpa, determine the maximum magnitude P of the loads that can be applied to the truss
MECHANICS OF DEFORMABLE BODIESShear Stress and Bearing Stress
Problem No. 5 A punch having a diameter d=1 inch is used to punch a hole in a steel plate with a thickness t=1/16 in. as illustrated in the figure below. Calculate:a. The force P required if the shear stress in steel is 20 ksi b. The corresponding normal stress in the punch.
MECHANICS OF DEFORMABLE BODIESShear Stress and Bearing Stress
MECHANICS OF DEFORMABLE BODIESShear Stress and Bearing Stress
Problem No. 6 A pin-connected basic truss composed of members AB and BC is subjected to vertical force P=40kN at joint B. The diameter of the pins is d=20mm. Determine the shearing stress in the pin at joint C.
MECHANICS OF DEFORMABLE BODIESShear Stress and Bearing Stress
MECHANICS OF DEFORMABLE BODIESShear Stress and Bearing Stress
Problem No. 7 A simple lap joint with bolts of diameter d and plates thickness t is to support a load P as shown in the figure below. Calculate:a. The normal stress at the critical section a-a b. The shear stress in the bolts c. The bearing stress between the bolts and the plate
MECHANICS OF DEFORMABLE BODIESShear Stress and Bearing Stress
MECHANICS OF DEFORMABLE BODIESShear Stress and Bearing Stress
Problem No. 8 Two plates are joined by four bolts of d=20mm diameter, as shown in the figure. The shearing, tensile and bearing stresses are limited to 80 MPa, 100 MPa and 140 MPa, respectively. Determine the maximum load P.
MECHANICS OF DEFORMABLE BODIESShear Stress and Bearing Stress